“…However, malachite green has been banned for use in food fish due to its carcinogenic and genotoxic effects on humans (Alderman, 1985;Wahli et al, 1993;Srivastava et al, 2004). Other chemotherapeutants, such as formalin (Rintamäki-Kinnunen et al, 2005a,b;Rowland et al, 2009), chloramine-T (Rintamäki-Kinnunen et al, 2005a), copper sulphate (Ling et al, 1993;Schlenk et al, 1998;Rowland et al, 2009), potassium permanganate (Straus and Griffin, 2002), hydrogen peroxide (Rintamäki-Kinnunen et al, 2005a), sodium percarbonate (Buchmann et al, 2003), peracetic acid (Straus and Meinelt, 2009;Sudová et al, 2010) and bronopol (Shinn et al, 2012) have been evaluated for their antiparasitic efficacy. The majority of these therapeutants lack efficacy for treating Ich or they are not safe for human health and the environment (Tieman and Goodwin, 2001).…”